公开(公告)号：US20230399970A1

公开(公告)日：2023-12-14

申请号：US18329624

申请日：2023-06-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Toru YAEO ,  Yoshifumi MATSUDA ,  Masashi HAKARIYA ,  Atsushi MORIKAWA ,  Ikuo HODA ,  Noriyasu ADACHI ,  Masanori HAYASHI ,  Kenji IGAWA

IPC: F01N11/00 ,  F02D41/02

CPC classification number: F01N11/005 ,  F02D41/0235 ,  F02D2200/0802

Abstract: A controller for an internal combustion engine is configured to execute a determination process that determines that a deviation between a first change amount and a second change amount during a fuel cutoff operation is less than or equal to a threshold, and an anomaly diagnosing process that determines that an exhaust purification device is in a detached state when the determination process determines that the deviation is less than or equal to the threshold. The first change amount and the second change amount are change amounts per unit time of the temperature of exhaust gas on the upstream side and the downstream side of the exhaust purification device, respectively. The controller is configured to interrupt the determination process when the upstream-side temperature increases within a determination period.

公开(公告)号：US20230399965A1

公开(公告)日：2023-12-14

申请号：US18329663

申请日：2023-06-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Toru YAEO ,  Yoshifumi MATSUDA ,  Masashi HAKARIYA ,  Atsushi MORIKAWA ,  Ikuo HODA ,  Noriyasu ADACHI ,  Masanori HAYASHI ,  Kenji IGAWA

IPC: F01N3/025 ,  F01N3/023

CPC classification number: F01N3/025 ,  F01N3/023

Abstract: A controller for an internal combustion engine is configured to execute a regeneration process of burning and removing particulate matter accumulated in an exhaust purification device, a determination process of determining that a deviation between a first change amount and a second change amount is less than or equal to a threshold, the first change amount and the second change amount being change amounts per unit time of the temperature of exhaust gas on the upstream side and the downstream side of the exhaust purification device, respectively, and an anomaly diagnosing process that determines that the exhaust purification device is in a detached state when the determination process determines that the deviation is less than or equal to the threshold. The controller is configured to not execute the determination process during a period from the end of the regeneration process to when a post-regeneration execution condition is met.

公开(公告)号：US20230399971A1

公开(公告)日：2023-12-14

申请号：US18329708

申请日：2023-06-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Toru YAEO ,  Yoshifumi MATSUDA ,  Masashi HAKARIYA ,  Atsushi MORIKAWA ,  Ikuo HODA ,  Noriyasu ADACHI ,  Masanori HAYASHI ,  Kenji IGAWA

IPC: F01N11/00 ,  F02D41/02

CPC classification number: F01N11/005 ,  F02D41/0235

Abstract: A controller for an internal combustion engine is configured to execute a determination process and an anomaly diagnosing process. The determination process is a process of determining that a deviation between a first change amount and a second change amount during a fuel cutoff operation is less than or equal to a threshold. The anomaly diagnosing process is a process of determining that an exhaust purification device is in a detached state when it is determined in the determination process that the deviation is less than or equal to the threshold. The first change amount and the second change amount are change amounts per unit time of the temperature of exhaust gas on the upstream side and the downstream side of the exhaust purification device, respectively.